Career
Arrested in 1940 by NKWD, he spent, 1,5 year in Soviet camps (lagier). Evacuated to Iraq among Polish soldier of Anders. Since 1945 he lived in Great Britain.
In the years of 1908–1913 Zalewski constructed biplane WZ I and its 20 hp engine.
During the years of 1915–1916 he built two tetraplanes, in which one was flying on the frontline. During the interwar period Zalewski built biplane WZ VIII (1919), fighter plane WZ X (1923–1926), sports plane WZ XI (1927) and the first Polish four-engined heavy bombing plane PZL-3 (1928–1930.
Built in France as Potez 41) made in PZL. Zalewski constructed also aircraft engines in manufactory Avia: WZ-7 (80 hp), WZ-40 (40 hp), WZ Bobo (10 hp), WZ-100 (100 hp).
